Table roll for paper machines



June' 23, I925.

E. N. DAULTON TABLE ROLL FOR PAPER MACHINES Filed 'Jan. 26, 1925Patented June 23, 1925.

UNITED STATES ERNEST N. DAULTON. 0F FITCHIBURG, MASSACHUSETTS.

TABLE ROLL FOR PAPER MACHINES.

Application filed January 26, 1925. Serial No. 4,663.

To all whom it may concern:

\ Be it known that ERNEST N. DAULTON, a citizen of the United States,residing at Fitchbur in the county of Worcester and State ofassachusetts, has invented a new and useful Table Roll for PaperMachines, of which the following is a specification.

This relates to a roll of composite construction particularly adaptedfor use in paper making machines. In such machines a wide perforatedmetal screen or belt is drawn over a plurality of supporting rollsduring the operation of the machine. It is necessary that these rollsshall be very accurately formed and that they shall present a verysmooth and perfectly finished surface. Any slight defect in the surfaceof the roll will cause very rapid wear and deterioration of the metalscreen and will also produce irregularities in the product of themachine.

It is the object of my invention to provide an improved table roll whichmay be cheaply and easily restored to satisfactory working conditionafter it has become worn or defective.

A further object is to provide a roll which is light in weight andrelatively inexpensive to manufacture.

My invention further relates to arrangements and combinations of partswhich will be hereinafter described and more particularly pointed out inthe appended claim.

A preferred formof the invention is shown in the drawings in which Fig.1 is a side elevation of my improved roll, partly in section; and

Fig. 2 is a sectional end elevation, taken along the line 2-2 in Fig. 1.

Referring to the drawings, my improved roll comprises a pair of heads 10having short shafts or journals 11 firmly'fixed therein. The heads 10are connected by a relatively heavy metal sleeve or cylinder 12 which ispreferably forced onto the heads 10 and which may be additionallysecured thereto in a convenient manner.

In the preferred form of my construction, the heads 10 and sleeve orcylinder 12 are formed of aluminum and the shafts or journals 11 areformed of steel. The heads 10 may be provided with flanges or shoulders13 at their outer sides against which the ends of the cylinder 12 mayabut.

A relatively thin tube or sleeve 14 is close- 1y fitted over thecylinder 12 and forms the wearing surface of the roll. The ends 15 ofthe tube 14 may be drawn in over the ends of the heads 10 by a spinningor pressing operation. so as to provide a smooth rounded corner at eachend of the working surface of the roll. The sleeve 14 is preferablyformed of brass which is readily smoothed and polished and which isfound to be the most satisfactory material for use in paper machinerolls.

A paper roll formed as above described is much lighter than the rollsheretofore commonly used and is also very readily kept in satisfactoryworking condition. As soon as the brass outer covering of the tube 14becomes damaged in any way, this covering may be easily removed and anew covering may be placed on the roll, by which procedure the roll ispractically restored to its original condition.

My improved roll is found to be of advantage also on account of itslight weight which renders it more easily rotatable. A light rollpresents less resistance to rotation and therefore the wear of the metalscreen or belt which is supported thereon is correspondingly reduced.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed, otherwise than asset forth in the claim, but what I claim is A table roll comprising apair of heads, journals for said heads, a relatively heavy cylinderpermanently secured to said heads. and a relatively thin metal tubemounted on said cylinder and having its end portions forced inward overthe ends of said cylinder heads, said tube forming the outer wearingsurface of said roll.

In testimony whereof I have hereunto affixed my signature.

( ERNEST N. DAULTON.

